usn-6555-1
Vulnerability from osv_ubuntu
Published
2023-12-13 13:23
Modified
2026-04-27 14:11
Summary
xorg-server, xwayland vulnerabilities
Details

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled XKB button actions. An attacker could possibly use this issue to cause the X Server to crash, execute arbitrary code, or escalate privileges. (CVE-2023-6377)

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled memory when processing the RRChangeOutputProperty and RRChangeProviderProperty APIs. An attacker could possibly use this issue to cause the X Server to crash, or obtain sensitive information. (CVE-2023-6478)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-6377",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-6478",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "xdmx",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12"
          },
          {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12"
          },
          {
            "binary_name": "xnest",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12"
          },
          {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12"
          },
          {
            "binary_name": "xserver-common",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12"
          },
          {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12"
          },
          {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12"
          },
          {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12"
          },
          {
            "binary_name": "xvfb",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12"
          },
          {
            "binary_name": "xwayland",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "xorg-server",
        "purl": "pkg:deb/ubuntu/xorg-server@2:1.20.13-1ubuntu1~20.04.12?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.20.13-1ubuntu1~20.04.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.20.5+git20191008-0ubuntu1",
        "2:1.20.6-1ubuntu1",
        "2:1.20.7-2ubuntu1",
        "2:1.20.7-2ubuntu2",
        "2:1.20.8-2ubuntu2",
        "2:1.20.8-2ubuntu2.1",
        "2:1.20.8-2ubuntu2.2",
        "2:1.20.8-2ubuntu2.3",
        "2:1.20.8-2ubuntu2.4",
        "2:1.20.8-2ubuntu2.6",
        "2:1.20.9-2ubuntu1.1~20.04.1",
        "2:1.20.9-2ubuntu1.2~20.04.1",
        "2:1.20.9-2ubuntu1.2~20.04.2",
        "2:1.20.11-1ubuntu1~20.04.2",
        "2:1.20.13-1ubuntu1~20.04.2",
        "2:1.20.13-1ubuntu1~20.04.3",
        "2:1.20.13-1ubuntu1~20.04.4",
        "2:1.20.13-1ubuntu1~20.04.5",
        "2:1.20.13-1ubuntu1~20.04.6",
        "2:1.20.13-1ubuntu1~20.04.8",
        "2:1.20.13-1ubuntu1~20.04.9"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-6377",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-6478",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "xnest",
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5"
          },
          {
            "binary_name": "xorg-server-source",
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5"
          },
          {
            "binary_name": "xserver-common",
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5"
          },
          {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5"
          },
          {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5"
          },
          {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5"
          },
          {
            "binary_name": "xvfb",
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "xorg-server",
        "purl": "pkg:deb/ubuntu/xorg-server@2:21.1.4-2ubuntu1.7~22.04.5?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:21.1.4-2ubuntu1.7~22.04.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.20.13-1ubuntu1",
        "2:1.20.13-1ubuntu2",
        "2:1.20.14-1ubuntu1",
        "2:21.1.3-2ubuntu2",
        "2:21.1.3-2ubuntu2.1",
        "2:21.1.3-2ubuntu2.2",
        "2:21.1.3-2ubuntu2.3",
        "2:21.1.3-2ubuntu2.4",
        "2:21.1.3-2ubuntu2.5",
        "2:21.1.3-2ubuntu2.6",
        "2:21.1.3-2ubuntu2.7",
        "2:21.1.3-2ubuntu2.8",
        "2:21.1.3-2ubuntu2.9",
        "2:21.1.4-2ubuntu1.7~22.04.1",
        "2:21.1.4-2ubuntu1.7~22.04.2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-6377",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-6478",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "xwayland",
            "binary_version": "2:22.1.1-1ubuntu0.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "xwayland",
        "purl": "pkg:deb/ubuntu/xwayland@2:22.1.1-1ubuntu0.9?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:22.1.1-1ubuntu0.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:21.1.2-0ubuntu1",
        "2:21.1.3-1",
        "2:21.1.3-1ubuntu1",
        "2:21.1.4-1",
        "2:22.1.0-1",
        "2:22.1.1-1",
        "2:22.1.1-1ubuntu0.1",
        "2:22.1.1-1ubuntu0.2",
        "2:22.1.1-1ubuntu0.3",
        "2:22.1.1-1ubuntu0.4",
        "2:22.1.1-1ubuntu0.5",
        "2:22.1.1-1ubuntu0.6",
        "2:22.1.1-1ubuntu0.7"
      ]
    }
  ],
  "aliases": [],
  "details": "Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled XKB\nbutton actions. An attacker could possibly use this issue to cause the X\nServer to crash, execute arbitrary code, or escalate privileges.\n(CVE-2023-6377)\n\nJan-Niklas Sohn discovered that the X.Org X Server incorrectly handled\nmemory when processing the RRChangeOutputProperty and\nRRChangeProviderProperty APIs. An attacker could possibly use this issue to\ncause the X Server to crash, or obtain sensitive information.\n(CVE-2023-6478)\n",
  "id": "USN-6555-1",
  "modified": "2026-04-27T14:11:32Z",
  "published": "2023-12-13T13:23:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6555-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-6377"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-6478"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "xorg-server, xwayland vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2023-6377",
    "UBUNTU-CVE-2023-6478"
  ]
}



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